Shifts, attendance and cover in rubber product makers: rules that hold on a busy day

At twenty to six one morning, the first-shift in-charge of a moulding unit learns that two press hands will not come. One has fever. The other has not phoned. Twelve presses are hot, slabs sit on trolleys and the night crew wants to leave. What happens in the next twenty minutes was settled months ago, either by written rules or by the lack of them.

These rules for rotas, absence and cover are written for the moulders, hose, belt and seal makers in our rubber products cluster.

• Start the mill room an hour ahead of the press bay, so warmed and sheeted slabs are waiting when the first platens open.
• Time autoclave and curing pan charges so a long cure does not end in the middle of a changeover.
• Load silicone post-cure ovens so trays come out on a shift with an in-charge present to check them.
• On belt presses where a section cure spans two shifts, name one press lead who owns that section start to finish.
• Keep calender runs on one crew where possible, since a thin handover mid-run wastes compound and fabric.

A press halfway through a cure, an autoclave under pressure or a belt section under the platens has to change hands in person. The outgoing hand says which cavities are live, how much cure time remains, whether anything is sticking or flashing and which batch is loaded. Both initial the sheet beside the press rather than at the time office. Our post on running a clean shift handover covers the wider method.

• Anyone who cannot attend rings or texts the in-charge's phone before a posted hour.
• The in-charge writes down the call, the time and the reason in a single book or screen.
• A silent no-show gets a same-day call that first asks whether the person is safe and when they expect to return.
• Repeated late calls are raised in private, never shouted across the press bay.

Most missed calls have ordinary causes: a flooded underpass in the monsoon, a bus that broke down on the highway, a phone with no charge, a child with fever at dawn. Allowing a call from a neighbour's phone, or a message passed through the time office, keeps honest people inside the rule.

Rung one: a relief operator already on shift, rated level 3 for that press type on the skill matrix.
Rung two: a multi-skilled operator moved from a lower-priority press, which is slowed or stopped.
Rung three: the in-charge runs the press for a short spell, if signed off on it.
Rung four: someone from the outgoing shift stays back, only within the overtime cap and only if willing.
Rung five: the press stays off and the plan changes. Nobody untrained goes onto hot platens to protect the count.
The in-charge notes who covered, from which rung and for how long.

In many rubber plants the same dependable few soak up every extra hour. The best braiders and press hands wear out, and the rest feel passed over. Keep a turn list for each skill. Offer hours in order, record who said yes and who said no, and move down the list. Cap consecutive doubles, above all at platens and oven doors. Rush orders that land late in the afternoon, a familiar headache in gasket units, need an approval before they become overtime.

• Publish leave plans for festival weeks and harvest months early, and agree who will be in.
• Limit how many braiders, splicers or curative weighers are away together.
• Plan long cures, belt projects and large moulding runs around the leave plan instead of discovering the clash later.
• Permit shift swaps only with the in-charge's approval and an entry in the log.

• Keep at least one person signed off for curative weigh-up, mould change and autoclave unloading on every night shift.
• Do not start a mould change or a fresh compound after midnight unless a fitter is on site.
• Give the night in-charge authority to stop a press without waiting for a morning phone call.
• Rotate nights so the same braiders or oven crew are not on permanent nights by default.
• Read the night log every morning for burns, near misses and presses run by relief hands.

Night crews notice quickly whether the day managers read their log. A short reply on the next night's sheet shows that someone did.

Punches, the cover log and the overtime turn list should tell one story. When a missed punch or late swipe needs correcting, use a single form and approver, like this attendance regularisation request. Read each month's cover log beside the skill matrix. If one press keeps being covered from rung three or four, train another relief hand for it.

Gasket units get evening calls for urgent parts, and rota rules for gasket units set a cut-off. Seal plants rotate sorters to rest their eyes; see sorting rotas in seal plants. Belt plants match crew load to project dates under belt plant shift planning. Our rota, attendance and leave design work helps plants draft these rules and keep them running.